UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date: April 2, 2015
Accession Number: 0001193125-15-078787
Submission Type: POS AM
CIK: 0001172139
Company Name: BILL BARRETT CORP
File Number: 333-182413
CIK: 0001466850
Company Name: Circle B Land Co LLC
File Number: 333-182413-04
CIK: 0001524790
Company Name: Aurora Gathering, LLC
File Number: 333-182413-01